The well known multiple letter encryption cipher is the Playfair cipher. Here the digrams in
the plaintext are treated as single units and converted into corresponding cipher text …

The well known multiple letter encryption cipher is the Playfair cipher. Here the diagrams in
the plaintext are treated as single units and converted into corresponding cipher text …

The well known multiple letter encryption cipher is the Playfair cipher. Here the digrams in
the plaintext are treated as single units and converted into corresponding cipher text …

In this paper, we have proposed an encryption method which is developed by extending
Playfair Cipher to make it more secure. Known as Polyalphabetic cipher, Playfair uses a key …

Playfair cipher is the form of block cipher which has no limit on the number of characters in a
message it can do, but it operates on block of characters encrypting and decrypting two …

Playfair cipher is one of the better-known multiple letter encryption ciphers. In this method,
the diagrams in the plaintext are treated as a single unit and then these units converted into …

Playfair cipher is the well-known multiple letter encryption cipher. Here the digraphs in the
plaintext are treated as single units and converted into corresponding cipher text digraphs …

Abstract Information that has to be kept confidential can be in any form: text, image, audio,
video, encoded, compressed etc. Therefore, the main objective of this research is to develop …

In this paper we present a new approach for secure transmission of message by modified
version of Playfair cipher combining with random number generator methods. To develop …

Playfair cipher is a well known multiple letter substitution cipher. It is relatively easy to break
because it still leaves much of the structure and a few hundred of letters of cipher text are …